You pick up a smooth stone at the beach and it feels… finished.
Like someone made it. But no one did.

So where did this stone actually come from?
Was it always like this, or did it change?

Some stones are tiny like sand, and some are huge like mountains.
How can they all be stones?

And how does something soft like sand turn into something hard?

Some stones even come from melted rock deep underground.
And somehow… a diamond is part of this story too.